| abstract |
The invention relates to a system and method for integrated treatment and resource utilization of flue gas desulfurization and denitrification by utilizing red mud, and belongs to the technical field of resource utilization and environmental protection. The system includes desulfurization spray tower, ozone machine, denitration spray tower, slurry mixing tank, slurry storage tank, vacuum filter, ammonia water neutralization tank, aluminum hydroxide precipitation tank, ammonia water tank, aluminum hydroxide storage tank, filter press machine, ammonia distillation tower, separator, cooler, concentrated ammonia water storage tank, gypsum sedimentation tank, anaerobic biochemical tank. The present invention uses red mud slurry to desulfurize and denitrify flue gas, removes SO 2 and NO in flue gas, makes SO 2 and NO in flue gas reach standard emission standards, and uses ammonia precipitant to recover hydrogen in red mud slurry Alumina and wastewater are returned to slurry preparation after precipitation, hydration and biochemical treatment, and realize integrated treatment and resource utilization of red mud and flue gas desulfurization and denitrification. |